US Bridges

NW Culebra Ave. over B-138 X Saltzman Culvert

Fair

Multnomah County, Oregon · NW Balboa at NW Culebra · Structure no. 25B138000000000

Built
1991
34 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
2,330
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

NW Culebra Ave. over B-138 X Saltzman Culvert is a prestressed concrete slab carrying NW Culebra Ave. over B-138 X Saltzman Culvert in Multnomah County, Oregon. It was built in 1991, so it is 34 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,330 vehicles a day, roughly 40% of them trucks, projected to reach 2,640 by 2025. The structure is 42 ft (12.8 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNW Culebra Ave.
CrossesB-138 X Saltzman Culvert
LocationNW Balboa at NW Culebra
RouteCity Street C0000
CountyMultnomah County
StateOregon
Coordinates45.56506, -122.74514
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span39 ft (11.9 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,330 (2020)
Projected traffic2,640 by 2025
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NW Culebra Ave. over B-138 X Saltzman Culvert built?

It was built in 1991, making it 34 years old in 2025.

What condition is NW Culebra Ave. over B-138 X Saltzman Culvert in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does NW Culebra Ave. over B-138 X Saltzman Culvert carry?

About 2,330 vehicles per day (2020 count), of which roughly 40% are trucks.

How long is NW Culebra Ave. over B-138 X Saltzman Culvert?

The structure is 42 ft (12.8 m) long with a longest span of 39 ft (11.9 m) and a deck 36 ft wide.

Who owns NW Culebra Ave. over B-138 X Saltzman Culvert?

It is owned by the City or Municipal Highway Agency.